Jiuzhaigou is between 2000-4500 meters above sea level, which belongs to the plateau humid climate and has unique landform types, including alpine plains, alpine canyons and Zhongshan canyons.
Zoige grassland is between 3300 meters and 3600 meters above sea level. It is a special area on the eastern edge of Qinghai-Tibet Plateau, also known as Songpan Plateau, and one of the three major wetlands in China.
Generally speaking, the altitudes of Jiuzhaigou and Zoige are above 2000 meters, and I don't know the specific altitude information.